1、VirtualBox对Ubuntu系统进行设置，“网络”选择“桥接网卡”
2、安装MYSQL服务器
sudo su; apt-get intall mysql-server
3、赋予远程访问的权限：
grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;
flush privileges;
4、修改绑定地址
vi /etc/mysql/mysql.conf.d/mysql.cnf， 把bind-address=127.0.0.1改成bind-address=0.0.0.0
5、重启MYSQL服务器
/etc/init.d/mysql stop;
/etc/init.d/mysql start;